A 9.67-m ladder with a mass of 20.8 kg lies flat on the ground. A painter grabs the top end of the ladder and?

A 9.67-m ladder with a mass of 20.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 248 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.82 rad/s2 about an axis passing through the bottom end of the ladder. The ladder's center of gravity lies halfway between the top and bottom ends.